Permanent magnet GENERATOR/Home made/bench test hand crank
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- Опубликовано: 26 авг 2024
- How to build a Low rpm, working generator. 100 watts at 120 rpm and 200 watts at 170 rpm. For charging a 12/ 24 volt system.Hand crank test. As seen on "America Unplugged" on the sportsman channel. Check out my other video and watch this generator working in my hydro system. • Working home made hydr...
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Here is a link to the magnets:
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Anvil: amzn.to/2oX4FHx
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The only video like this I've watch where the host isn't lying to the world. Thank you, there is still hope for RUclips yet in this department.
There are many people posting that need to take a physics course. Most windmill don't go over 1000rpm due to tip speed and they are small in diameter. This would work good with a small set of blades but not a large set because they would produce too much power for the generator and might over speed destroying the blades. Nice work I'm impressed with your embedding of the coils. Good for a small system. Enjoy. Thanks for the video.
Well it will work but you will spend a lot more on food and vet bills than you will ever save on your power bill. Dogs still pull sleds in the artic and this would be a way to make power in the wilderness. I like solar and hydro better.
The magnets will not loss their strength when they are next to each other in a circle or stacked. They are at harmony this way. Google it.
Great! Thumbs up! With a little water and enough pressure to spray from a nozzle, I thought about using tin cans not quite cut in half and pried open. Carefully cutting up one side and top of a can leaving the other side uncut and bending open the can to make two halves-- a "do-it-yourself pelton cup" Fastening a bunch of these homemade "pelton cups" around something which could be fastened directly to the shaft of a generator/alternator. With a generous spring or stream with a little more water and with a bit of drop to build pressure, I thought of taking 20 lb propane tanks and filling them with water to be sure there is no propane in them and then emptying the water and taking a right angle grinder with a cut-off wheel and cutting the propane tanks lengthwise, leaving one straight side uncut. When opened up this would make a large pelton cup. Done to about 8 or more propane tanks. Taking two steel automobile wheels and welding them together, then welding the opened propane tanks around the wheels making a large pelton wheel. The center of one of the 2 wheels welded together would need to be cut out to be able to get a ratchet in to tighten the lug nuts of the other wheel to a junked automobile hub/axle. Similar to this ruclips.net/video/BtCMuO3DVyE/видео.html Or instead of using the hub/axle of a junked auto, weld the propane "pelton wheel" to a large steel pipe and fit each end of the pipe through a large pillow block bearing.
Also, have you looked into connecting your generator to an MPPT and/or a charge controller? Both may help with how much force is needed to spin the generator.
You are a Blessing to the World,the general Public needs these and needs to be able to buy them,PLEASE.
I've been looking at a lot of different designs and your's is one of the beefiest I've seen yet.
After mauling over some idea's I thought using a centrifugal clutch like on small minibikes etc. that would engage only at a certain rpm and would allow a wind generation to get up to speed before it started generating electricity, then using an overriding clutch to keep it at a optimum rpm would be a great way to stay within the optimum range.
The overriding clutches are generally heavy, but with balancing they could help with inertia to keep turning much like a harmonic balancer. I can see using your generator to incorporate wind propulsion for it's drive and wired to produce AC into the home or what have you.
The low rpm is a huge benefit and would allow for a driver to gain momentum prior to moving the generator..Once a wind turbine engaged the centrifugal clutch the wind turbine will be spinning much more rapidly than the generator which in turn is controlled by the over running clutch.
It may just be what allows a constant flow of steady ac voltage.
An over running clutch is pretty much the opposite of a centrifugal clutch allowing slippage at a specific rpm in turn taking load off the wind driver..
Wow, very nice. I like how you are using inertial mass to overcome the "bumps" of the magnetic fields. Unfortunately many homemade generators don't incorporate the flywheel effect, but that is what makes yours so nice.
It is not free spinning when it has a load on it. I am working hard to charge the 12 volt battery. Once the generator slows to below 12 volts then it is free spinning and appears to be easy but once it is over 12 volts and starts pushing amperage to the battery it is very hard to turn.
This generator is for charging batteries only, so a battery that needs charging is a load. If I short the wires together I can still spin it but it is hard and all it does is produce heat.
It's awesome to see people providing ideas for self sufficient technology. I'm making a generator coil spreadsheet to find optimum choices for any situation and so I can visualize how the variables affect output.
You could make it smaller and lighter while providing the same output. Do you make it heavy so it maintains momentum like a flywheel?
What is your magnet to coil ratio (You have 2 sets of coils, so coils divided by 2)?
Since heating permanent magnets demagnetizes them, at what amps are your coils in danger of over heating (170f to demagnetize Neo permanent magnets)?
Have you 'solved for one unknown' to determine what your effective Gauss is, the amount of Gauss imparted to the coils by the magnets?
Faraday's Law for a magnet moving past a coil: N x A x T/S = Volts
# Turns x Area of coil in m^2 x Teslas / Second = volts, therefore # Turns x Area of coil in m^2 / Volts = Teslas / Second
Have you heard of Ion Harvesting? They are very simple to setup and power increases with height.
ruclips.net/video/ENeDkGce5-4/видео.html
Another good alternative idea is Don Smith and his recreation of Tesla methods for disturbing the electromagnetic medium (Ether for Tesla and his contemporaries) which is always at equilibrium. When you disturb the electromagnetic medium it will resonate providing a moving magnetic field which you can harvest with your coils. Input power maybe 15 watts while output power can be 1k watts. According to Don it's possible to get multiples of the output by placing identically tuned coils within the same field, which is only limited by the number of coils that can fit within the field of disturbance. Check out the office interview videos.
ruclips.net/channel/UC0tu2-2OJCrmbdyGYzui6jwvideos
+Don Ation I made it big so that it would put out good wattage at a low RPM. I made it heavy so that it will last for decades. I woke up one night years ago with a complete set of drawings in my head. So I built it by those drawings that were in my head. I don't know if there is a better design. Here is a video of it working in my creek.ruclips.net/video/Gnyo95hon-U/видео.html
@CredoVeritas It will take a lot of power to turn this generator more than 500 to 600 rmps. The recommended rpm is between 150 and 300. I have spun it with no load around 500rpms. Mark
At last - A no BS PMG being powered by something and not claiming to generate its own power. Great vid. Thanks for sharing.
I understand. I did get the threading thing figured out for the south bend lathe thanks in no small part to your video. I've been enjoying the others as well.
You do good work. That trailer hub and bearings should last a long time.
Nice DIY Generator. You'd get quite a workout charging 12V batteries.
The battery needed charging. Once the voltage of the generator was higher than 12 volts it started charging the battery. The generator was hard to turn once it started charging.
I'm going to you the science man..what you did is awesome bro...South Africa.
I don't think you understand how electricty is made. The resistance is the flux field from the magnets pushing the electrons in the copper wire, so less resistance is less electricty. One way to test the efficiency of the generator is to just simply spin it for a long time with no load. If it gets warm or hot it is not efficient, it is fighting itself.
the idea would be to help it generate electricty in low wind and high amp input yes the restistance wont change but you can off set it using a small badini circut inbeded in your generator so as you rotate the shaft it generates electricty then though a rectafire and a cupple of coils it will pulse dc currant to it timed to help ease the resistance i understand what you said you need that resistance to make electricity.
Good mechanical design, well done. Electrically, I have a thought. I see that you're putting the rectifier in the geni and sending DC down the wire. I would suggest putting the rectifier at the far end of the run, sending AC down the wire. You have much less power loss to line resistance with AC over what you lose with DC. That's the whole reason Edison lost that battle when trying to feed cities far away with DC.
AC and DC resistive losses are the same. Ohm's law is Ohm's law.
The power grid transmits electricity at very high voltage because as you are aware higher voltage results in lower current.
And the over simplified reason AC is delivered to the house and not DC is because transformers obviously don't work with DC.
FYI - telephone lines are DC and used to be battery powered (around 48v I believe) until quite recently.
You're right of course. I was forgetting that the lower line loss on AC power transmission was due to being able to step the voltage way up using a transformer, before sending it down the wire.
Good work - Pity we live on the other side of the Pacific my friend. Thank you for sharing you great work. At leaset like minded people can share ideas now days.
From Australia
nice idea . i have one proyect and tink you idea is perfect for my proyect. we can try make new transport for the future . no gas. no contamination . green energi. and recicle auto parts . no more gas for ever . thx 4 reading this note
I did not use a brake drum, I rolled a piece of flat bar then turned it on a lathe.
You won't damage the batteries with varing voltages, as long as you have several batteries. The more batteries the better it will handle higher charging voltage. You can have a input voltage up to 5 times what your batteries are rated at. If you are on a 12 volt system and you have high voltage all the time then just step up to a 24 volt system. You do need a charge controller with a dump load so that the turbine will always have a load on it.
Maybe one large pulley on rotating shaft to have gear speed advantage. Dog could easy handle the tourqe by adjusting length of lever. Pit bulls and grey hounds will run all day long if you let them. Thoughts??
Thank you for your quick response. I too tinker with various things. I would like to give you something to consider and ask if you think your generator would work in this application. Knowing 1 hp is 750 watts and seeing bicycle racing watching the watts out put meters on bike I see a human can get close to 500 in short burst.
Now that is one AWESOME piece of machinery!! I wish I had your talent and knowledge added to mine...XD
Might use a few of those magnets, and see if you can find any magnetite by the streams, and use that to make an epoxy magnetite composite core. Imagine, less epoxy, and free magnetic material for your cores. Use a ballmill to grind it fine so that it stays suspended in epoxy and eliminates eddy currents.
perhaps donate 1 of those to dietary clinics! u could get really fit doing what u just did! and power something at same time lol! good vid tho man! great stuff!
Very interesting indeed. We have a bit of wind up here in the Antelope Valley in the high desert north of Los Ange;es. Do you provide a propeller wind-to-drive-gear ratio (box) behind the propeller vanes with this set-up? And what is the ratio prop to generator break down to...in say a 25 MPH wind.?
Hey, something on RUclips that actually works and does not violate. the laws of physics!
how many such farms do you think there are Some number in hundreds of dogs all over this country and others? how many of them do you think are aware of what your product arranged as I suggested could do for them? Exercise is actively and intentional provided for those dogs on a daily basis
Look for a SAMSUNG front load washer. some of them have a low speed motor just like this one, but commercially made. Also Fisher Paykel makes one. Since these machines have many other problems not related to the motor, they are most often trashed and scrapped. You can see videos here on YT about them. Anyway, foolish to build when better ones are sitting on the curb waiting for a truck.
Have you ever thought of putting 2 on a geared mountain bike and peddling to what feels like a cruising speed (not exerting yourself) and checking the output? It would probably work well with a torque gear for higher RPM.
Looks like a good idea I wonder how long of blades it would take to make it turn for a wind generator?
No I have not used the n52 magnets. They are to costly. I have not had enough power to turn it more than 170rpms. Not sure what the mag load is. I designed it to be efficient with little input power and low rpms. The rectifier is easy to get to. There is a little hum in my hydro system under full load. You can see one I sold on youtube on a water wheel. search glowinglasscreations.
@gandl2123 18 foot diameter sounds about right. It will never spin faster than the animals speed though. To get that many volts you will have to turn it faster. I think a 48 volt system would be better. I sells these for $1100 plus shipping. Mark
@gschoep The battery was about 80% charge at the time.
Great work. Nice design. Thank you for sharing.
@shartne I would put 9 to 11 blades with a 7 to 8 foot dia. Mark
check this out here is an idea use a badini circut to pulse 1 set of magnets and one set of coils to reduce the drag under full load you will loose a little bit of power how ever your coils will pick up the pulses and delever them to the other coils to run the short dc pulses to push against the magnets so it would be a motor generator then you will have very little loss and still able to push the motor with ease
@michael970 I have sold 3. Shipping will be around $150. Mark
I never said it is perpetual motion. It is a very simple, large slow turning generator. This was a bench test to check output before I ship it. It is now connected to a waterwheel.
@SMGJohn I usually ship them by freight in the USA only. I am not sure how to ship this internationaly. Mark
Any amount of drag you impose on a vehicle by harnessing energy via wind, is in turn an energy "cost" in fuel, considering the motor must work harder to compensate. The only possible exception might be a turbine that turns purely from the turbulence "behind" the vehicle, and I mean RIGHT behind it, not in a trailer, for example.
have you considered making them so that a rim & tire could be mounted to it, then mounting them to a vehicle with an elec. motor driven vehicle? i would think you'd have power to spare so much so that you'd have no distance limitations. as long as the vehicle was moving you'd be churning out electricty for the motor and for a battery bank coupled with quick charging cap. banks. just a thought. great job. if i ever come into money i'll look you up to get get one for a vawt unit i'd like to make.
Very impressive, really, Mark.
@gandl2123 Well you won't get much power from a cow. I think you would get a thin cow too. A horse would be better but he would need a lot of food. You would need a few horses to take turns. Mark
Well you would get tired in a hour, But, yes if made it into a stationary bike and used your legs it would charge a battery that good run a tv with very little effort. New tv's only use 40 to 100 watts so you could watch tv and get in shape.
question have you built one useing n52 grad mags ....im more interested in output at low rpm than cost to build.....have you tryed to burn one up by over loading it to see at what max load be safe. and not damage the device...is rectifier locatied as to easy to replace....eddie current hum i undestand some what but was surprised you may have had to deal with that still wondering about....but over all i really like your method very strate forward...
A lot depends on how fast it will be turning. I would guess around 18 to 22 gauge wire and around 20 to 30 wraps per coil.
Wicked, sick! Wish more people like u in the world
This was very good! Thank you! Mike
u make my day thanks a lot, can u make that inside a car rim then connect the output to a led light over rim, i just wanna have lights on my rims?
Excellent, professional video.
Excellent product!
This is a well done video and yes you need to check with a load and many people dont. I am curious at the state of charge of the battery. Was it fully charged?
electric magnets means you would have to run power to them. If the electric magnets were spinning they would require brushes to supply them with power. The spinning part needs to be a permanent magnet so you don't have to have brushes. If we ever get to a power coupler that works over an air gap like in Star Wars we will have more options but that is not an option at the present.
dzimmerm1956 slip rings work fairly well for some applications. As for coupling over a gap, you have capacitive or inductive coupling. But unless one has superconductors, electromagnets will always loose energy as heat.
Not sure what you mean by a wind turbine for a vehicle, that would be like a sail boat sail, not a turbine. I have a old treadmill motor if you think you can make it work.
Good job... Are you using with blades? Like wind turbine?
Great job!!!!! real test with real numbers, good for you
have you considered getting a small engine (3 hp outboard or something) to see what you could generate at 1800 rpm. plug in a 500 watt light and see what happens, id be very interested in the results.
I would be afraid to spin it that fast. I have spun it with no load around 300 rpm with a drill motor. It was a little scary, I think it should only be spun at a low RPM.
@SuperHurdman It can only be used to charge batteries
very nice generator.have you sold many of them what would shipping cost be to CT
hello
how is the minimal velocity of wind to rotate this genearator , and how is the force nedded to rotate
Awesome video, thanks for sharing. What's the maximum rpm the bearings can tolerate on this unit if driven by a motor?
I will post a video to show you what i have done and it works great it is not as large as your project how ever it still the same basic magnetic induction through a copper wire
Yes I do not list them. I still make one or two a year. I sell them for $2000 plus shipping. They are hard to make and I do not enjoy making them anymore.
No, it is not a motor it is just a alternator with a full bridge rectifer. It has to be powered by wind or water.
Nice work. Liked your video.
That is one heck of a big PMG! I am looking for a low rpm PMG but I think it may be too big for my site. You can see a video of my micro hydro site on youtube.
Hey Mr. Mark I am a high school senior with only a fundamental knowledge of electricity. In my engineering program we have to plan and create something for our senior project. My project entails creating a wind turbine for a vehicle. I have the blade design, but the electric generator portion is proving to be difficult. I was wondering if you could help me out and guide me in building a homemade permanent magnet alternator or maybe we could do business and you could make it for me.
Yes, rare earth magnets will make a lot more power but they are expensive and they corrode over time.
This is pretty cool! Looks good.
No you are wrong. Just google it. These magnets when put in a circle will last several of our lifetimes.
@markp0177 Was thinking a large wheel 18ft diameter or so and have one or more of these running on the inside of the wheels outer edge. The bigger the wheel the faster this would spin right? Also, with a battery bank of say 144volts, how would this be able to charge it...or would I need to have batteries 12v in series or parallel, I forgot? Price of one? Tks
@SMGJohn I am not sure how to ship a 250 pound wooden box to Korea?
We're building a VAWT for my son's school project. It seems the voltage output can vary greatly (as the wind increases), how do i prevent damaging the batteries?
Yes. Just use a generator for a bicycle. It hooks to the tire to power one light.
It is for charging batteries. The batteries run a inverter that will run your computer.
@123kkambiz Unfortunately even with 100% efficiency you will get the input as output but nothing more,this isn't nowhere close 100% efficient so you will have to put at least 150w mechanical energy input to get 100w electrical output.
The most efficient way to get the power you need is by turning the generator by hands/legs,you can convert anything eatable to mechanical energy,and not only you will get green energy burning 0 fuel,but you will also improve your health.
Mark; Is there a construction manual or a book instructions about how to construct a low RPM generator...I think that would be very helpful to me to understand better details such as what gauge wire and why....how many wraps and why etc... I enjoy your videos and find them most helpful...Thank you for sharing your knowledge...Sidney
Sorry, I do not have a manual. The drawing are in my head LOL.
You are a very smart man....I envy you...
I have received thing from America in the past via post. Enquire at Fedex or DHL how to do international deliveries. They do offer it.
Is there anyway to miniaturize this to an alternator that's 3/4" in diameter and 3/4" in length? Obviously the power generated would be far less but if you could help me make such an Alternator I'd gladly pay you for you efforts.
Hello. I am not sure how to ship this out of the country.
Yes, What size wire do you want?
The generator is charging the battery thru a full wave bridge rectifer. The battery is the load.
Please take the time to visit Witts period ws to see existing solutions for free energy and talk with the experts who can help you implement them.
Do you have to use so much gunge around the coils?
I mean what does that take to repair a blown coil?!
You R The Man ! Keep it a kickin .
I live close to Knoxville, TN. How far are you from there? If we are close enough perhaps we could get together to discuss some stuff.
I didn't see the generator on your website, what would one cost?
I am not spinning it 170 rpm by hand, I am turning it a my hydro set up. You can see it on another video.
Those magnets are huge. What size and strength are they?
I would love to hook something like that up to a belt driven system with a horse or a cow walking in a circle and turning it a standard number of times. Un hook em and let him eat some grass, drink some water and then back to work....what do you think about that?
When you are making your generators, is weight a criteria, and why?
They are 3" x 2" x 1" thick Ceramic grade 8 magnets
Nice. Why did you use ceramic magnets and not Neodymium
The cost of Neodymium magnets would have been $1500 or more.
Yes it is brushless.
Mark, nice job! I see the automotive wheel bearing, hub, and shaft. I like the outside arrangement of magnets for cooling. Did you use a truck brake drum to house the magnets? That stator coil looks labor intensive to make. I fear your 2K price will put off the average person but I hope you have success among the well to do who are looking for a small off the grid system. This would be nice coupled with a nickel iron battery bank. Best wishes in your efforts!